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Abstract

This thesis deals with a study of the wettability
of amorphous carbon, of the type employed as anode
material in the production of aluminium, by cryolite
based solutions. The wettability of carbon has been
improved by the addition of inorganic additives of the
type used in cryolite electrolytes, such as aluminium
oxide, calcium flanride and carbonate, and lithium
flunride and carbonate.
Particular improvements in carbon wettability are
noted when the system is contained in an atmosphere of
carbon dioxide - carbon monoxide, corresponding to
practical production conditions.
Furtheremore, when anodes prepared containing
these additives are used in a laboratory aluminium
cell, notable reductions in cell voltage are achieved
at practical an0de current densities. The improved
adhesion of the two phases has also been demonstrated
by measurement of the current density and voltage
conditions required to llinduce anode effects in this cell.
Improvements in power requirements and carbon
consumption per unit weight of product are shown, and
finally, an assessment of the project potential under
industrial operating conditions has been made.

Item Type:	Thesis - Unspecified
Authors/Creators:	Osborne, John Anthony
Keywords:	Aluminum
Copyright Holders:	The Author
Copyright Information:	Copyright 1968 the author - The University is continuing to endeavour to trace the copyright owner(s) and in the meantime this item has been reproduced here in good faith. We would be pleased to hear from the copyright owner(s).
Additional Information:	Thesis (M.Sc.) - University of Tasmania, 1968. Includes bibliographical references
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